Lesson: Reflections on the Coordinate Plane Mathematics • 8th Grade

In this lesson, we will learn how to find the images of points, lines, and shapes after their reflection in the x- or y-axis on the coordinate plane.

Lesson Plan

Students will be able to

reflect points, line segments, and polygons in horizontal and vertical lines in all four quadrants,
write the coordinates of points after a reflection,
write the coordinates of the original point given the reflected image.

Q1:

If a point with coordinates is reflected in the -axis, determine the coordinates of the image.

Q2:

If a point with coordinates is reflected in the , determine the coordinates of the image.

Q3:

What is the image of under reflection in the -axis?